@misc{indiciaee357c04d125e,
  title = {An approach to operating system testing},
  author = {Sum, R. N., Jr. and Campbell, R. H. and Kubitz, W. J.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19860010502},
  note = {Source identifier: 19860010502}
}